Glenn Randers-Pehrson | f7d1a17 | 1998-06-06 15:31:35 -0500 | [diff] [blame^] | 1 | .TH LIBPNGPF 3 "June 6, 1998" |
Glenn Randers-Pehrson | cbe52d8 | 1998-02-28 07:00:24 -0600 | [diff] [blame] | 2 | .SH NAME |
Glenn Randers-Pehrson | f7d1a17 | 1998-06-06 15:31:35 -0500 | [diff] [blame^] | 3 | libpng \- Portable Network Graphics (PNG) Reference Library 1.0.1e - June 6, 1998 |
Glenn Randers-Pehrson | cbe52d8 | 1998-02-28 07:00:24 -0600 | [diff] [blame] | 4 | (private functions) |
| 5 | .SH SYNOPSIS |
| 6 | #include <png.h> |
| 7 | |
| 8 | void png_build_gamma_table (png_structp png_ptr); |
| 9 | |
| 10 | void png_build_grayscale_palette (int bit_depth, png_colorp |
| 11 | palette); |
| 12 | |
| 13 | void png_calculate_crc (png_structp png_ptr, png_bytep ptr, |
| 14 | png_size_t length); |
| 15 | void png_check_chunk_name (png_structp png_ptr, png_bytep |
| 16 | chunk_name); |
| 17 | |
| 18 | png_size_t png_check_keyword (png_structp png_ptr, png_charp |
| 19 | key, png_charpp new_key); |
| 20 | |
| 21 | void png_combine_row (png_structp png_ptr, png_bytep row, int |
| 22 | mask); |
| 23 | |
| 24 | void png_correct_palette (png_structp png_ptr, png_colorp |
| 25 | palette, int num_palette); |
| 26 | |
| 27 | int png_crc_error (png_structp png_ptr); |
| 28 | |
| 29 | int png_crc_finish (png_structp png_ptr, png_uint_32 skip); |
| 30 | |
| 31 | void png_crc_read (png_structp png_ptr, png_bytep buf, |
| 32 | png_size_t length); |
| 33 | |
Glenn Randers-Pehrson | f7d1a17 | 1998-06-06 15:31:35 -0500 | [diff] [blame^] | 34 | png_voidp png_create_struct (int type, png_malloc_ptr malloc_fn); |
| 35 | |
| 36 | png_voidp png_create_struct_2 (int type); |
Glenn Randers-Pehrson | cbe52d8 | 1998-02-28 07:00:24 -0600 | [diff] [blame] | 37 | |
| 38 | void png_destroy_struct (png_voidp struct_ptr); |
| 39 | |
Glenn Randers-Pehrson | f7d1a17 | 1998-06-06 15:31:35 -0500 | [diff] [blame^] | 40 | void png_destroy_struct_2 (png_voidp struct_ptr, png_free_ptr |
| 41 | free_fn); |
| 42 | |
Glenn Randers-Pehrson | cbe52d8 | 1998-02-28 07:00:24 -0600 | [diff] [blame] | 43 | void png_do_background (png_row_infop row_info, png_bytep row, |
| 44 | png_color_16p trans_values, png_color_16p background, |
| 45 | png_color_16p background_1, png_bytep gamma_table, png_bytep |
| 46 | gamma_from_1, png_bytep gamma_to_1, png_uint_16pp gamma_16, |
| 47 | png_uint_16pp gamma_16_from_1, png_uint_16pp gamma_16_to_1, int |
| 48 | gamma_shift); |
| 49 | |
| 50 | void png_do_bgr (png_row_infop row_info, png_bytep row); |
| 51 | |
| 52 | void png_do_chop (png_row_infop row_info, png_bytep row); |
| 53 | |
| 54 | void png_do_dither (png_row_infop row_info, png_bytep row, |
| 55 | png_bytep palette_lookup, png_bytep dither_lookup); |
| 56 | |
| 57 | void png_do_expand (png_row_infop row_info, png_bytep row, |
| 58 | png_color_16p trans_value); |
| 59 | |
| 60 | void png_do_expand_palette (png_row_infop row_info, png_bytep |
| 61 | row, png_colorp palette, png_bytep trans, int num_trans); |
| 62 | |
| 63 | void png_do_gamma (png_row_infop row_info, png_bytep row, |
| 64 | png_bytep gamma_table, png_uint_16pp gamma_16_table, int |
| 65 | gamma_shift); |
| 66 | |
| 67 | void png_do_gray_to_rgb (png_row_infop row_info, png_bytep |
| 68 | row); |
| 69 | |
| 70 | void png_do_invert (png_row_infop row_info, png_bytep row); |
| 71 | |
| 72 | void png_do_pack (png_row_infop row_info, png_bytep row, |
| 73 | png_uint_32 bit_depth); |
| 74 | |
| 75 | void png_do_packswap (png_row_infop row_info, png_bytep row); |
| 76 | |
| 77 | void png_do_read_filler (png_row_infop row_info, png_bytep row, |
| 78 | png_uint_32 filler, png_uint_32 flags); |
| 79 | |
| 80 | void png_do_read_interlace (png_row_infop row_info, png_bytep |
| 81 | row, int pass, png_uint_32 transformations); |
| 82 | |
| 83 | void png_do_read_invert_alpha (png_row_infop row_info, |
| 84 | png_bytep row); |
| 85 | |
| 86 | void png_do_read_swap_alpha (png_row_infop row_info, png_bytep |
| 87 | row); |
| 88 | |
| 89 | void png_do_read_transformations (png_structp png_ptr); |
| 90 | |
| 91 | void png_do_rgb_to_gray (png_row_infop row_info, png_bytep |
| 92 | row); |
| 93 | |
| 94 | void png_do_shift (png_row_infop row_info, png_bytep row, |
| 95 | png_color_8p bit_depth); |
| 96 | |
| 97 | void png_do_strip_filler (png_row_infop row_info, png_bytep |
| 98 | row, png_uint_32 flags); |
| 99 | |
| 100 | void png_do_swap (png_row_infop row_info, png_bytep row); |
| 101 | |
| 102 | void png_do_unpack (png_row_infop row_info, png_bytep row); |
| 103 | |
| 104 | void png_do_unshift (png_row_infop row_info, png_bytep row, |
| 105 | png_color_8p sig_bits); |
| 106 | |
| 107 | void png_do_write_interlace (png_row_infop row_info, png_bytep |
| 108 | row, int pass); |
| 109 | |
| 110 | void png_do_write_invert_alpha (png_row_infop row_info, |
| 111 | png_bytep row); |
| 112 | |
| 113 | void png_do_write_swap_alpha (png_row_infop row_info, png_bytep |
| 114 | row); |
| 115 | |
| 116 | void png_do_write_transformations (png_structp png_ptr); |
| 117 | |
| 118 | void *png_far_to_near (png_structp png_ptr,png_voidp ptr, |
| 119 | int check); |
| 120 | |
| 121 | void png_flush (png_structp png_ptr); |
| 122 | |
| 123 | png_int_32 png_get_int_32 (png_bytep buf); |
| 124 | |
| 125 | png_uint_16 png_get_uint_16 (png_bytep buf); |
| 126 | |
| 127 | png_uint_32 png_get_uint_32 (png_bytep buf); |
| 128 | |
| 129 | void png_handle_bKGD (png_structp png_ptr, png_infop info_ptr, |
| 130 | png_uint_32 length); |
| 131 | |
| 132 | void png_handle_cHRM (png_structp png_ptr, png_infop info_ptr, |
| 133 | png_uint_32 length); |
| 134 | |
| 135 | void png_handle_gAMA (png_structp png_ptr, png_infop info_ptr, |
| 136 | png_uint_32 length); |
| 137 | |
| 138 | void png_handle_hIST (png_structp png_ptr, png_infop info_ptr, |
| 139 | png_uint_32 length); |
| 140 | |
| 141 | void png_handle_IEND (png_structp png_ptr, png_infop info_ptr, |
| 142 | png_uint_32 length); |
| 143 | |
| 144 | void png_handle_IHDR (png_structp png_ptr, png_infop info_ptr, |
| 145 | png_uint_32 length); |
| 146 | |
| 147 | void png_handle_oFFs (png_structp png_ptr, png_infop info_ptr, |
| 148 | png_uint_32 length); |
| 149 | |
| 150 | void png_handle_pCAL (png_structp png_ptr, png_infop info_ptr, |
| 151 | png_uint_32 length); |
| 152 | |
| 153 | void png_handle_pHYs (png_structp png_ptr, png_infop info_ptr, |
| 154 | png_uint_32 length); |
| 155 | |
| 156 | void png_handle_PLTE (png_structp png_ptr, png_infop info_ptr, |
| 157 | png_uint_32 length); |
| 158 | |
| 159 | void png_handle_sBIT (png_structp png_ptr, png_infop info_ptr, |
| 160 | png_uint_32 length); |
| 161 | |
| 162 | void png_handle_sRGB (png_structp png_ptr, png_infop info_ptr, |
| 163 | png_uint_32 length); |
| 164 | |
| 165 | void png_handle_tEXt (png_structp png_ptr, png_infop info_ptr, |
| 166 | png_uint_32 length); |
| 167 | |
| 168 | void png_handle_tIME (png_structp png_ptr, png_infop info_ptr, |
| 169 | png_uint_32 length); |
| 170 | |
| 171 | void png_handle_tRNS (png_structp png_ptr, png_infop info_ptr, |
| 172 | png_uint_32 length); |
| 173 | |
| 174 | void png_handle_unknown (png_structp png_ptr, png_infop |
| 175 | info_ptr, png_uint_32 length); |
| 176 | |
| 177 | void png_handle_zTXt (png_structp png_ptr, png_infop info_ptr, |
| 178 | png_uint_32 length); |
| 179 | |
| 180 | void png_info_destroy (png_structp png_ptr, png_infop |
| 181 | info_ptr); |
| 182 | |
| 183 | void png_init_read_transformations (png_structp png_ptr); |
| 184 | |
| 185 | void png_process_IDAT_data (png_structp png_ptr, png_bytep |
| 186 | buffer, png_size_t buffer_length); |
| 187 | |
| 188 | void png_process_some_data (png_structp png_ptr, png_infop |
| 189 | info_ptr); |
| 190 | |
| 191 | void png_push_check_crc (png_structp png_ptr); |
| 192 | |
| 193 | void png_push_crc_finish (png_structp png_ptr); |
| 194 | |
| 195 | void png_push_crc_skip (png_structp png_ptr, png_uint_32 |
| 196 | length); |
| 197 | |
| 198 | void png_push_fill_buffer (png_structp png_ptr, png_bytep |
| 199 | buffer, png_size_t length); |
| 200 | |
| 201 | void png_push_handle_tEXt (png_structp png_ptr, png_infop |
| 202 | info_ptr, png_uint_32 length); |
| 203 | |
| 204 | void png_push_handle_unknown (png_structp png_ptr, png_infop |
| 205 | info_ptr, png_uint_32 length); |
| 206 | |
| 207 | void png_push_handle_zTXt (png_structp png_ptr, png_infop |
| 208 | info_ptr, png_uint_32 length); |
| 209 | |
| 210 | void png_push_have_end (png_structp png_ptr, png_infop |
| 211 | info_ptr); |
| 212 | |
| 213 | void png_push_have_info (png_structp png_ptr, png_infop |
| 214 | info_ptr); |
| 215 | |
| 216 | void png_push_have_row (png_structp png_ptr, png_bytep row); |
| 217 | |
| 218 | void png_push_process_row (png_structp png_ptr); |
| 219 | |
| 220 | void png_push_read_chunk (png_structp png_ptr, png_infop |
| 221 | info_ptr); |
| 222 | |
| 223 | void png_push_read_end (png_structp png_ptr, png_infop |
| 224 | info_ptr); |
| 225 | |
| 226 | void png_push_read_IDAT (png_structp png_ptr); |
| 227 | |
| 228 | void png_push_read_sig (png_structp png_ptr, png_infop |
| 229 | info_ptr); |
| 230 | |
| 231 | void png_push_read_tEXt (png_structp png_ptr, png_infop |
| 232 | info_ptr); |
| 233 | |
| 234 | void png_push_read_zTXt (png_structp png_ptr, png_infop |
| 235 | info_ptr); |
| 236 | |
| 237 | void png_push_restore_buffer (png_structp png_ptr, png_bytep |
| 238 | buffer, png_size_t buffer_length); |
| 239 | |
| 240 | void png_push_save_buffer (png_structp png_ptr); |
| 241 | |
| 242 | void png_read_data (png_structp png_ptr, png_bytep data, |
| 243 | png_size_t length); |
| 244 | |
| 245 | void png_read_filter_row (png_structp png_ptr, png_row_infop |
| 246 | row_info, png_bytep row, png_bytep prev_row, int filter); |
| 247 | |
| 248 | void png_read_finish_row (png_structp png_ptr); |
| 249 | |
| 250 | void png_read_init (png_structp png_ptr); |
| 251 | |
| 252 | void png_read_push_finish_row (png_structp png_ptr); |
| 253 | |
| 254 | void png_read_start_row (png_structp png_ptr); |
| 255 | |
| 256 | void png_read_transform_info (png_structp png_ptr, png_infop |
| 257 | info_ptr); |
| 258 | |
| 259 | void png_reset_crc (png_structp png_ptr); |
| 260 | |
| 261 | void png_save_int_32 (png_bytep buf, png_int_32 i); |
| 262 | |
| 263 | void png_save_uint_16 (png_bytep buf, unsigned int i); |
| 264 | |
| 265 | void png_save_uint_32 (png_bytep buf, png_uint_32 i); |
| 266 | |
| 267 | void png_write_bKGD (png_structp png_ptr, png_color_16p values, |
| 268 | int color_type); |
| 269 | |
| 270 | void png_write_cHRM (png_structp png_ptr, double white_x, |
| 271 | double white_y, double red_x, double red_y, double green_x, |
| 272 | double green_y, double blue_x, double blue_y); |
| 273 | |
| 274 | void png_write_data (png_structp png_ptr, png_bytep data, |
| 275 | png_size_t length); |
| 276 | void png_write_filtered_row (png_structp png_ptr, png_bytep |
| 277 | filtered_row); |
| 278 | |
| 279 | void png_write_find_filter (png_structp png_ptr, png_row_infop |
| 280 | row_info); |
| 281 | |
| 282 | void png_write_finish_row (png_structp png_ptr); |
| 283 | |
| 284 | void png_write_gAMA (png_structp png_ptr, double file_gamma); |
| 285 | |
| 286 | void png_write_hIST (png_structp png_ptr, png_uint_16p hist, |
| 287 | int num_hist); |
| 288 | |
| 289 | void png_write_init (png_structp png_ptr); |
| 290 | |
| 291 | void png_write_IDAT (png_structp png_ptr, png_bytep data, |
| 292 | png_size_t length); |
| 293 | |
| 294 | void png_write_IEND (png_structp png_ptr); |
| 295 | |
| 296 | void png_write_IHDR (png_structp png_ptr, png_uint_32 width, |
| 297 | png_uint_32 height, int bit_depth, int color_type, int |
| 298 | compression_type, int filter_type, int interlace_type); |
| 299 | |
| 300 | void png_write_oFFs (png_structp png_ptr, png_uint_32 x_offset, |
| 301 | png_uint_32 y_offset, int unit_type); |
| 302 | |
| 303 | void png_write_pCAL (png_structp png_ptr, png_charp purpose, |
| 304 | png_int_32 X0, png_int_32 X1, int type, int nparams, png_charp |
| 305 | units, png_charpp params); |
| 306 | |
| 307 | void png_write_pHYs (png_structp png_ptr, png_uint_32 |
| 308 | x_pixels_per_unit, png_uint_32 y_pixels_per_unit, int |
| 309 | unit_type); |
| 310 | |
| 311 | void png_write_PLTE (png_structp png_ptr, png_colorp palette, |
| 312 | png_uint_32 num_pal); |
| 313 | |
| 314 | void png_write_sBIT (png_structp png_ptr, png_color_8p sbit, |
| 315 | int color_type); |
| 316 | |
| 317 | void png_write_sig (png_structp png_ptr); |
| 318 | |
| 319 | void png_write_sRGB (png_structp png_ptr, int intent); |
| 320 | |
| 321 | void png_write_start_row (png_structp png_ptr); |
| 322 | |
| 323 | void png_write_tEXt (png_structp png_ptr, png_charp key, |
| 324 | png_charp text, png_size_t text_len); |
| 325 | |
| 326 | void png_write_tIME (png_structp png_ptr, png_timep mod_time); |
| 327 | |
| 328 | void png_write_tRNS (png_structp png_ptr, png_bytep trans, |
| 329 | png_color_16p values, int number, int color_type); |
| 330 | |
| 331 | void png_write_zTXt (png_structp png_ptr, png_charp key, |
| 332 | png_charp text, png_size_t text_len, int compression); |
| 333 | |
| 334 | voidpf png_zalloc (voidpf png_ptr, uInt items, uInt size); |
| 335 | |
| 336 | void png_zfree (voidpf png_ptr, voidpf ptr); |
| 337 | |
| 338 | .SH DESCRIPTION |
| 339 | The functions listed above are used privately by libpng |
| 340 | and are not recommended for use by applications. They |
| 341 | are listed alphabetically here as an aid to libpng maintainers. |
| 342 | See png.h for more information on these functions. |
| 343 | |
| 344 | .SH SEE ALSO |
| 345 | libpng(3), png(5) |
| 346 | .SH AUTHOR |
| 347 | Glenn Randers-Pehrson |